BF527 8 channel audio recording via USB

I hope that you can give me some helpful pointers. I have been working on a blackfin based microphone with 8 digital mems microphones. I want to send the input via USB to the host computer. I have read the USB Audio Class 2.0 specification and saw that is has support for multichannel audio. I was wondering if the audio class drivers that come with VisualDSP for Blackfin have the same kind of support and I would appreciate some tips as to where to look. I currently have it working for 2 channels and 16 bits depth without modifying the drivers.

TL;DR: How do I enable 8 channel audio at 48 or 96khz with sample depth of 24 bits in the USB library?